ivandika3 commented on code in PR #10589:
URL: https://github.com/apache/ozone/pull/10589#discussion_r3460981875


##########
hadoop-ozone/ozone-manager/src/test/java/org/apache/hadoop/ozone/om/TestOmMetadataManager.java:
##########
@@ -1294,4 +1294,29 @@ public void testGetMultipartUploadKeys() throws 
Exception {
 
     assertEquals(25, noPagination.size());
   }
+
+  @Test
+  public void testListKeysSpecialKeyNames() throws Exception {
+    List<String> keyNames = Arrays.asList(" ", "\"",
+        "$", "%", "&", "'", "<", ">", "_", "_ ", "_ _", "__");
+
+    String volumeName = "volumeA";
+    String bucketName = "bucketA";
+    OMRequestTestUtils.addVolumeToDB(volumeName, omMetadataManager);
+    addBucketsToCache(volumeName, bucketName);
+
+    assertEquals("/volumeA/bucketA/ ",
+        omMetadataManager.getOzoneKey(volumeName, bucketName, " "));
+
+    for (int i = 0; i < keyNames.size(); i++) {
+      addKeysToOM(volumeName, bucketName, keyNames.get(i), i);
+    }

Review Comment:
   I'd prefer if we actually have an S3 integration test to prove that Ozone 
actually accepts a blank key (I'm not sure if it does). If OM does not accept a 
blanc key, then the S3 single white space S3 object key path will never be 
exercised.



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